On Monday, Pope Francis told reporters his visit to the United States this September will include a stop in Washington, D.C. He's likely to visit the White House and address Congress.
There's been no official announcement from the Vatican, so the Archdiocese isn't talking about it yet. That means there is no information about events, tickets, etc.
The Pope told reporters he will now stop in Washington and New York, in addition to an already planned trip to Philadelphia.